/* ============================================
   萝莉岛 - 绝地求生风格游戏解说视频社区
   原创CSS样式表 - 军事战术配色方案
   主色: #1B2838 深钢蓝 | #D4A843 琥珀金
   辅色: #2D5016 军事绿 | #C75B39 战火橙
   强调: #4A90D9 天空蓝 | #8B6914 暗金
   ============================================ */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:'Microsoft YaHei','PingFang SC','Helvetica Neue',sans-serif;background:#0D1117;color:#E6EDF3;line-height:1.8}
a{color:#D4A843;text-decoration:none;transition:color .3s}
a:hover{color:#F0C75E}
img{max-width:100%;height:auto}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* 导航栏 */
.site-header{background:linear-gradient(180deg,#0D1117 0%,#1B2838 100%);position:fixed;top:0;left:0;width:100%;z-index:1000;border-bottom:2px solid #D4A843;box-shadow:0 2px 20px rgba(0,0,0,.5)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;padding:10px 20px;max-width:1200px;margin:0 auto}
.nav-brand{display:flex;align-items:center;gap:10px}
.nav-brand img{height:42px;width:auto}
.nav-brand span{font-size:1.3rem;font-weight:700;color:#D4A843;letter-spacing:1px}
.nav-menu{display:flex;list-style:none;gap:6px}
.nav-menu li a{color:#C9D1D9;padding:8px 14px;border-radius:4px;font-size:.9rem;transition:all .3s;display:block}
.nav-menu li a:hover,.nav-menu li a.active{background:#D4A843;color:#0D1117;font-weight:600}
.nav-toggle{display:none;flex-direction:column;cursor:pointer;gap:5px}
.nav-toggle span{width:26px;height:3px;background:#D4A843;border-radius:2px;transition:.3s}

/* 搜索框 */
.search-bar{background:#161B22;padding:12px 0;border-bottom:1px solid #21262D}
.search-wrap{display:flex;max-width:600px;margin:0 auto;gap:8px;padding:0 20px}
.search-wrap input{flex:1;padding:10px 16px;border:1px solid #30363D;border-radius:6px;background:#0D1117;color:#E6EDF3;font-size:.95rem;outline:none;transition:border-color .3s}
.search-wrap input:focus{border-color:#D4A843}
.search-wrap button{padding:10px 22px;background:linear-gradient(135deg,#D4A843,#8B6914);color:#0D1117;border:none;border-radius:6px;font-weight:600;cursor:pointer;transition:transform .2s}
.search-wrap button:hover{transform:scale(1.05)}

/* 面包屑 */
.breadcrumb{padding:15px 0;font-size:.85rem;color:#8B949E}
.breadcrumb a{color:#4A90D9}
.breadcrumb span{margin:0 6px;color:#484F58}

/* Hero Banner */
.hero-section{position:relative;min-height:520px;display:flex;align-items:center;overflow:hidden;margin-top:65px}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.4)}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(13,17,23,.85) 0%,rgba(27,40,56,.7) 50%,rgba(13,17,23,.9) 100%)}
.hero-content{position:relative;z-index:2;padding:60px 20px;max-width:1200px;margin:0 auto;width:100%}
.hero-content h1{font-size:2.8rem;color:#D4A843;margin-bottom:16px;text-shadow:0 2px 10px rgba(212,168,67,.3);line-height:1.3}
.hero-content h1 em{font-style:normal;color:#F0C75E}
.hero-content p{font-size:1.15rem;color:#C9D1D9;max-width:700px;margin-bottom:24px;line-height:1.9}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.hero-tags span{background:rgba(212,168,67,.15);border:1px solid #D4A843;color:#D4A843;padding:5px 14px;border-radius:20px;font-size:.85rem}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap}
.btn-primary{padding:12px 32px;background:linear-gradient(135deg,#D4A843,#8B6914);color:#0D1117;border:none;border-radius:6px;font-size:1rem;font-weight:700;cursor:pointer;transition:all .3s;display:inline-block;text-align:center}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(212,168,67,.4);color:#0D1117}
.btn-outline{padding:12px 32px;background:transparent;border:2px solid #4A90D9;color:#4A90D9;border-radius:6px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s;display:inline-block;text-align:center}
.btn-outline:hover{background:#4A90D9;color:#0D1117}

/* 通用区块 */
.section{padding:60px 0}
.section-dark{background:#0D1117}
.section-alt{background:#161B22}
.section-military{background:linear-gradient(180deg,#0D1117 0%,#1A2332 50%,#0D1117 100%)}
.section-title{text-align:center;margin-bottom:45px}
.section-title h2{font-size:2rem;color:#D4A843;margin-bottom:10px;position:relative;display:inline-block}
.section-title h2::after{content:'';position:absolute;bottom:-8px;left:50%;transform:translateX(-50%);width:60px;height:3px;background:linear-gradient(90deg,#D4A843,#C75B39)}
.section-title p{color:#8B949E;font-size:1rem;margin-top:16px}

/* 视频卡片网格 */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.video-card{background:#161B22;border-radius:10px;overflow:hidden;border:1px solid #21262D;transition:all .3s;position:relative}
.video-card:hover{transform:translateY(-6px);border-color:#D4A843;box-shadow:0 12px 30px rgba(212,168,67,.15)}
.video-thumb{position:relative;overflow:hidden;aspect-ratio:16/9}
.video-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.video-card:hover .video-thumb img{transform:scale(1.08)}
.play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%) scale(0);width:64px;height:64px;background:rgba(212,168,67,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;transition:all .3s;cursor:pointer;box-shadow:0 4px 15px rgba(0,0,0,.4)}
.play-btn::after{content:'';width:0;height:0;border-style:solid;border-width:12px 0 12px 20px;border-color:transparent transparent transparent #0D1117;margin-left:4px}
.video-card:hover .play-btn{transform:translate(-50%,-50%) scale(1)}
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.8);color:#fff;padding:2px 8px;border-radius:3px;font-size:.8rem}
.video-info{padding:16px}
.video-info h3{font-size:1rem;color:#E6EDF3;margin-bottom:8px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;justify-content:space-between;color:#8B949E;font-size:.8rem}
.video-meta span{display:flex;align-items:center;gap:4px}
.video-tag{display:inline-block;background:rgba(74,144,217,.15);color:#4A90D9;padding:2px 8px;border-radius:3px;font-size:.75rem;margin-top:8px}

/* 分类标签导航 */
.tab-nav{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:30px}
.tab-nav a{padding:8px 20px;border:1px solid #30363D;border-radius:20px;color:#8B949E;font-size:.9rem;transition:all .3s}
.tab-nav a:hover,.tab-nav a.active{border-color:#D4A843;color:#D4A843;background:rgba(212,168,67,.1)}

/* 专家团队 */
.expert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:28px}
.expert-card{background:#161B22;border-radius:10px;padding:28px;text-align:center;border:1px solid #21262D;transition:all .3s}
.expert-card:hover{border-color:#D4A843;box-shadow:0 8px 25px rgba(212,168,67,.1)}
.expert-card img{width:100px;height:100px;border-radius:50%;object-fit:cover;border:3px solid #D4A843;margin-bottom:16px}
.expert-card h4{color:#D4A843;font-size:1.1rem;margin-bottom:6px}
.expert-card .role{color:#4A90D9;font-size:.85rem;margin-bottom:10px}
.expert-card p{color:#8B949E;font-size:.88rem;line-height:1.7}
.expert-card .expert-links{margin-top:14px;display:flex;justify-content:center;gap:10px}
.expert-card .expert-links a{padding:6px 16px;border:1px solid #30363D;border-radius:4px;font-size:.82rem;color:#C9D1D9;transition:all .3s}
.expert-card .expert-links a:hover{border-color:#D4A843;color:#D4A843}

/* AI赋能区 */
.ai-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px}
.ai-card{background:linear-gradient(135deg,#161B22 0%,#1A2332 100%);border-radius:10px;padding:30px;border:1px solid #21262D;transition:all .3s}
.ai-card:hover{border-color:#4A90D9;box-shadow:0 8px 25px rgba(74,144,217,.1)}
.ai-card .ai-icon{font-size:2.5rem;margin-bottom:16px}
.ai-card h4{color:#4A90D9;font-size:1.15rem;margin-bottom:10px}
.ai-card p{color:#8B949E;font-size:.9rem;line-height:1.8}

/* 社区频道 */
.channel-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:20px}
.channel-card{background:#161B22;border-radius:10px;padding:24px;border:1px solid #21262D;transition:all .3s;text-align:center}
.channel-card:hover{border-color:#C75B39;transform:translateY(-4px)}
.channel-card .ch-icon{font-size:2.2rem;margin-bottom:12px}
.channel-card h4{color:#E6EDF3;font-size:1.05rem;margin-bottom:8px}
.channel-card p{color:#8B949E;font-size:.85rem}
.channel-card .ch-stats{margin-top:12px;color:#D4A843;font-size:.85rem;font-weight:600}

/* FAQ手风琴 */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#161B22;border:1px solid #21262D;border-radius:8px;margin-bottom:12px;overflow:hidden}
.faq-question{padding:18px 24px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;color:#E6EDF3;font-weight:600;font-size:1rem;transition:background .3s}
.faq-question:hover{background:#1A2332}
.faq-question::after{content:'+';font-size:1.4rem;color:#D4A843;transition:transform .3s;font-weight:400}
.faq-item.active .faq-question::after{content:'-';transform:rotate(180deg)}
.faq-answer{padding:0 24px;max-height:0;overflow:hidden;transition:all .4s ease;color:#8B949E;line-height:1.8}
.faq-item.active .faq-answer{padding:0 24px 18px;max-height:500px}

/* 用户评论 */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px}
.review-card{background:#161B22;border-radius:10px;padding:24px;border:1px solid #21262D}
.review-header{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.review-avatar{width:46px;height:46px;border-radius:50%;background:linear-gradient(135deg,#D4A843,#C75B39);display:flex;align-items:center;justify-content:center;color:#0D1117;font-weight:700;font-size:1.1rem}
.review-name{color:#E6EDF3;font-weight:600}
.review-date{color:#484F58;font-size:.8rem}
.review-stars{color:#D4A843;font-size:.9rem;letter-spacing:2px;margin-bottom:10px}
.review-card p{color:#8B949E;font-size:.9rem;line-height:1.8}

/* How-To指南 */
.howto-steps{max-width:700px;margin:0 auto}
.howto-step{display:flex;gap:20px;margin-bottom:28px;align-items:flex-start}
.step-num{min-width:48px;height:48px;background:linear-gradient(135deg,#D4A843,#8B6914);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#0D1117;font-weight:700;font-size:1.2rem}
.step-content h4{color:#E6EDF3;font-size:1.05rem;margin-bottom:6px}
.step-content p{color:#8B949E;font-size:.9rem}

/* 合作品牌 */
.brand-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:30px;align-items:center}
.brand-wall span{background:#161B22;padding:12px 28px;border-radius:8px;border:1px solid #21262D;color:#8B949E;font-size:.95rem;font-weight:600;transition:all .3s}
.brand-wall span:hover{border-color:#D4A843;color:#D4A843}

/* 联系信息 */
.contact-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.contact-card{background:#161B22;border-radius:10px;padding:28px;border:1px solid #21262D;text-align:center}
.contact-card h4{color:#D4A843;font-size:1.1rem;margin-bottom:12px}
.contact-card p{color:#8B949E;font-size:.9rem;line-height:1.8}
.contact-card img{max-width:160px;margin-top:12px;border-radius:8px}

/* 社交分享 */
.share-bar{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;padding:20px 0}
.share-btn{padding:10px 22px;border-radius:6px;font-size:.9rem;font-weight:600;transition:all .3s;cursor:pointer;border:none;color:#fff}
.share-btn.wechat{background:#07C160}
.share-btn.weibo{background:#E6162D}
.share-btn.douyin{background:#161823}
.share-btn.bilibili{background:#00A1D6}
.share-btn:hover{transform:translateY(-2px);opacity:.9}

/* 页脚 */
.site-footer{background:#0D1117;border-top:2px solid #21262D;padding:50px 0 0}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:30px;margin-bottom:40px}
.footer-brand img{height:40px;margin-bottom:14px}
.footer-brand p{color:#8B949E;font-size:.88rem;line-height:1.8}
.footer-col h5{color:#D4A843;font-size:1rem;margin-bottom:16px;font-weight:600}
.footer-col ul{list-style:none}
.footer-col ul li{margin-bottom:8px}
.footer-col ul li a{color:#8B949E;font-size:.88rem;transition:color .3s}
.footer-col ul li a:hover{color:#D4A843}
.footer-col h6{color:#C9D1D9;font-size:.9rem;margin-bottom:10px}
.footer-bottom{text-align:center;padding:20px 0;border-top:1px solid #21262D;color:#484F58;font-size:.82rem}
.footer-bottom a{color:#4A90D9}

/* 返回顶部 */
.back-top{position:fixed;bottom:30px;right:30px;width:46px;height:46px;background:linear-gradient(135deg,#D4A843,#8B6914);border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;opacity:0;visibility:hidden;transition:all .3s;z-index:999;border:none;color:#0D1117;font-size:1.2rem;box-shadow:0 4px 15px rgba(212,168,67,.3)}
.back-top.visible{opacity:1;visibility:visible}
.back-top:hover{transform:translateY(-3px)}

/* 懒加载占位 */
.lazy-placeholder{background:#21262D;animation:pulse 1.5s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.5}}

/* 响应式 */
@media(max-width:768px){
.nav-menu{display:none;position:absolute;top:100%;left:0;width:100%;background:#1B2838;flex-direction:column;padding:20px;border-top:1px solid #21262D}
.nav-menu.active{display:flex}
.nav-toggle{display:flex}
.hero-content h1{font-size:1.8rem}
.hero-content p{font-size:1rem}
.video-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}
.expert-grid{grid-template-columns:1fr}
.section{padding:40px 0}
.section-title h2{font-size:1.5rem}
.footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:480px){
.hero-content h1{font-size:1.5rem}
.hero-btns{flex-direction:column}
.video-grid{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr}
.nav-brand span{font-size:1rem}
}